如何在安卓手机中检查3G是否已激活。

Question

我想检查我的手机是否启用了3G，并在此之后触发一个意图（Intent）。 请问有人可以帮我吗？ 先行感谢 :)

- Vaibhav

Answer 1

这是我最近编写的一个应用程序的另一个片段：

TelephonyManager telManager;    
telManager = (TelephonyManager) getApplicationContext().getSystemService(Context.TELEPHONY_SERVICE);
int cType = telManager.getNetworkType();
String cTypeString;
switch (cType) {
        case 1: cTypeString = "GPRS"; break;
        case 2: cTypeString = "EDGE"; break;
        case 3: cTypeString = "UMTS"; break;
        case 8: cTypeString = "HSDPA"; break;
        case 9: cTypeString = "HSUPA"; break;
        case 10:cTypeString = "HSPA"; break;
        default:cTypeString = "unknown"; break;
}

- DonGru

Answer 2

试试这些东西，

    void checkConnectionStatus()
      {
       ConnectivityManager connMgr = (ConnectivityManager)
      this.getSystemService(Context.CONNECTIVITY_SERVICE);


      final android.net.NetworkInfo wifi =
      connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);


      final android.net.NetworkInfo mobile =
      connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);


      if( wifi.isAvailable() ){
      Toast.makeText(this, "Wifi" , Toast.LENGTH_LONG).show();
      }
      else if( mobile.isAvailable() ){
      Toast.makeText(this, "Mobile 3G " , Toast.LENGTH_LONG).show();
      }
      else
      {Toast.makeText(this, "No Network " , Toast.LENGTH_LONG).show();}
      }
}

- Lalit Poptani

Answer 3

首先，您需要检查是Wi-Fi还是移动网络。

然后只需调用以下内容：

(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE)).getNetworkType());

如果你处于EDGE、GPRS或其他网络环境，你也可以进行这个操作。

if (getSsTelephony().getNetworkType() >= TelephonyManager.NETWORK_TYPE_UMTS)
    return NETWORK_3G;

- Lukap

Answer 4

    ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);

    NetworkInfo mMobile = connManager
            .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

    if (mMobile.isAvailable() == true) {
        Intent otherActivity = new Intent();
        mapActivity.setClass(getBaseContext(), other.class);
        startActivity(otherActivity);
    }

不要忘记在 AndroidManifest.xml 文件中添加“ACCESS_NETWORK_STATE”权限！

- Saqib Razaq

Answer 5

这将检查您是否有互联网连接（3G）：

private boolean isNetworkAvailable() {
    ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetworkInfo = connectivityManager
            .getActiveNetworkInfo();
    return activeNetworkInfo != null;
}

- Gaurav